Lock.



H. G. VOIGHT.

LOCK.

APPLICATION man sm. 28. :9|5.

Patented Aug. 1, 1916.

mm' gir ls LV/TNESSES f Tl/5MM rnnTED sTATns PATENT ernten.

HENRY G. VOIGHT, OF NEW BRITAIN, CONNECTICUT, ASSIGNOR TO SARGENT & COM- PANY, OF NEW HAVEN, CONNECTICUT, A CORPORATION OF CONNECTICUT.

LOCK.

'Application filed September 28, 1915.

To all whom t may concern:

Be it known that I, HENRY G.' Voici-rr, a citizen of the United States, residing in New Britain, county of Hartford, and State of Connecticut, have invented certain new and useful Improvements in Locks, of which the following is a full, clear, and exact description.

This invention relates to locks, and more particularly to rim night latches or looks of the type in which a pin tumbler lock accessible at the outside of the door is housed in an opening bored through the door, and is provided with a key rod or the like, extending into the lock case which is applied to the inside face of the door. Y

Usually locks of this character are sold `with the pin tumbler mechanism entirelyV separate from the case containing the bolt mechanism, and there is considerable dlfculty in applying the lock to the door with said mechanisms in proper alinement. Furthermore, considerable trouble 1s encountered in adJustmg the lock to doors of varying thickness, owing to the fact that theV i pm tumbler lock 13. However, the particuscrews for securing the pin tumbler mechanism in place have to be shortened or cut off with a considerable degree of exactitude, when the lock is to be applied to a door of less than maximum thickness.

@ne of the primary objects of the invention is to avoid these defects, and to provide a'lock of the character indicated wherein the pin tumbler mechanism is permanently mounted on the back plate of the rim case, and in which such pin tumbler lock mechanism is extensible from the back plate in an improved manner soas to facilitate the application of the lock to doors of different thickness.

Another object ,of the invention is to provide a lock which canbe applied by boring the hole for the pin tumbler lock, then applying the back plate of the rim lock to the inner face of the door with the pin tumbler lock located in said hole or opening, and then positioning the pin tumbler mechanism so that it properly. fills said opening, by means of a feed screw which can be readily actuated by means of a screw driver or the like, after the back plate has been attached to the door. In this manner application of the lock is very much facilitated.

Other objects of the invention are to provide .an improved escutcheon member or rose Specification of Letters Patent.

Patented Aug. 1, 1916.

serial No. 53,096.

for the pin tumbler lock, and to improve the general construction and operation of devices of the class to which the invention relates.

In the accompanying drawing, Figure 1 is a fragmentary outside elevation of a door equipped with a lock embodying my invention. Fig. 2 is a plan View, partly in section on line 2-2 of Fig. 1. Fig.` 3 is a fragmentary inside elevation of the door shownight latch of the type comprising a rim` case 10, in which is mounted a latch bolt 1l, operable from the insidey of thedoor by a knob 12,' (partially shown in Fig. 2,) and from the outside of the door by means of a lar kind of bolt mechanism employed is immaterial. The rim case 10 isl applied to the inner face of the door 14 and includes a back plate 1.5 secured to the door by screws 16. After application of the back plate t0 the door the main part of the rim case is attached to the back plate in the` usual manner. The pin tumbler lock is housed in a` round opening orv bore 17 extending through the'door, andin the form shown the pin tumbler lock has a key rod 18 which is adapted to actuate the bolt 11 by means of a hub19, while the knob 12v is adapted to actuate the bolt by means of a similar hub 20. I f Y In my invention I mount the pin tumbler lock permanently en the back plate 15 in such a manner that when the bore 17 has been formed in the door, and the plate 15 has been applied to the door with the lock located in said bore, the pin tumbler lock lmay be adjusted readily in a direction lengthwise of the bore or opening so that the outer face of the pin tumbler lock may be brought into the desired relation to the outer face of the door. In the example shown the pin tumbler lock comprises a case 21 in which the usual pin tumblers (not shown) are housed, and in which the ordinary key plug 22 is mounted to rotate. face plate 23 of customary form is provided, and the ordinary key rod 18 connected with the rear end of the key plug is adapted to rotate the key hub 19 in the usual manner. This key hub is suitably mounted for rotation on the back plate, as shown in Figs. 3 and 4.

At the rear portion of the pin tumbler lock casing 21 is a laterally extending lug 25, having a threaded opening engaging an adjusting or feed screw 26 fixed to the back plate 15 within the bore 17. The screw 26 has a head 27 so secured in the plate 15 that while the screw may be freely rotated ,it is prevented from moving lengthwise. F urthermore, the screw head 27 is provided with a nick or slot accessible at the inner face of the back plate so that by turning this screw 26 in one or the other direction by means of a screw driver after the back plate has been secured to the door, thc pin tumbler lock may be advanced or retracted in its opening, so that it can be properly positioned therein. At the side opposite the lug 25 the pin tumbler lock is provided with a laterally extending lug 28 having a smooth opening engaged by a smooth guide pin 29. By this arrangement the parts are prevented from binding as thepin tumbler lock is ad- -vanced or retracted by means of its feed screw 26. Fig. 2 shows the lock applied to a comparatively thin door and in this case the pin tumbler lock is in close proximity to the back plate 15. In Fig. 4, however, I have shown the lock applied to a thicker door and in this instance lit will be understood that by means of the feed screw 26, properly manipulated by a screw driver from the inside of the door, the pin tumbler lock is extended much farther from the back plate so as to bring the face plate 23 of said lock into proper relation with the outside face of the door.

I prefer to associate with the face plate 23 of the pin tumbler lock a rose or finishing ring 30 of novel construction. This ring is provided with a body portion'adapted to vlie against the outer face ofthe door and with an annular flange 31 adapted to t between the rim of the face plate 23 and the opposing face of the opening 17. The flange 31 is provided with bayonet slots 32 adapted to engage corresponding locking pins 33 projecting laterally from the pin tumbler lock. In applying the device the pin tumbler lock is extended outward in the opening 17 beyond its ultimate position. The ring 30 is then inserted into the opening around the face plate 23 with lits bayonet slots passing over the locking pins 33. The ring is then turned slightly on its axis so as to lock the pins tightly in the bayonet notches, and finally the adjusting screw 26 is so turned as to draw the ring tightly against the outer face of the door by the engagement of the pins in the bayonet notches. In this manner the ring is tightly locked in place, and it is impossible for a burglar or any unauthorized person to remove the same when the door is closed. In some cases, however, a different type of finishing ring may be employed if desired.

It is obvious that my invention provides for an extremely simple and convenient application of the lock to the door. Obviously the back plate should be attached to the door in such a position that the pin tumbler lock will be centrally located in the opening or bore provided therefor. In order to achieve this purpose I provided the back plate with suitable centering means and in the form illustrated this means takes the form of lugs 34 on the back plate adapted to engage the edge of the opening in the door. The linisliing ring or rose herein described can be applied with the greatest dispatch owing to the fact that it is merely necessary to attach it to the front end of the pin tumbler lock and then retract the pin tumbler lock in its opening so as to clamp the ring tightly in place. This dispenses with the necessity of employing special attaching screws for the ring.

Without limiting myself to the precise construction shown, I claim:

1. The combination with a rim lock case having a separate back plate, of a pin tumbler lock, a guide pin for said -pin tumbler lock secured to the back plate, an adjusting screw for said pin tumbler lock having threaded engagement therewith, said screw provided with a head accessible at the front or inner face of the back plate, and means for centering said pin tumbler lock in a bore through the door; substantially as described.

2. The combination with a rim case having a back plate, of a pin tumbler lock secured to the back plate, and means on the back plate for centering said lock in its opening or bore; substantially as described.

3. The combination with a rim case having a back plate, of .a pin tumbler lock carried by said back plate, means for moving said lock toward or away from said back plate, and projections on the back plate for centering said lock in lits bore; substantially as described.

In witness whereof, I have hereunto set my hand on the 24th day of September, 1915.

HENRY Gr. VOIGHT.

Copies o this patent may be obtained for ve cents each, by addressing the Commissioner of Patents,

Washington, D. C. 

